I've created a group of devices (FCM Device Group)
And when I send a message from the console the Sent, Open, and Conversion statistics are always 0.
If I send a message to a single device the statistics works OK:
Is there any way I can get Sent, Opened an Conversion statistics of a message sent to a group?
Can I retrieve those statistics via API?
I need to retrieve the opened and conversion data of different messages (Topics don't fit our needs). I can make it one by one or by groups, but I don't find how can I get the data.
Thanks in advance.